#include <stdio.h>
#include <stdlib.h>

#define LEN sizeof(struct student)
struct student {
    long num;
    float score;
    struct student *next;
};
int n;

struct student *creat(void) {
    struct student *head;
    struct student *p1, *p2;
    n = 0;
    p1 = p2 = (struct student *) malloc(LEN);
    scanf("%ld,%f", &p1->num, &p1->score);
    head = NULL;
    while (p1->num != 0) {
        n = n + 1;
        if (n == 1) head = p1;
        else p2->next = p1;
        p2 = p1;
        p1 = (struct student *) malloc(LEN);
        scanf("%ld,%f", &p1->num, &p1->score);
    }
    p2->next = NULL;
    return (head);
}

int main() {
    struct student *pt;
    pt = creat();
    printf("\nnum:%ld\nscore:%5.1f\n", pt->num, pt->score);
    return 0;
};